振动信号处理与多功能时频分析系统的研究  

A New System for Vibration Signal Processing and Multifunctional Time-frequency Analysis

作　　者：孙苗钟[1] 殷磊 谈炳发[1] 崔世海[1] 徐元利[1] SUN Miaozhong;YIN Lei;TAN Bingfa;CUI Shihai;XU Yuanli(Tianjin Key Laboratory of Integrated Desigh and On-line Monitoring for Light Industry&Food Machinery and Equipment,College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin 300222,China)

机构地区：[1]天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学机械工程学院,天津300222

出　　处：《天津科技大学学报》2020年第4期58-64,74,共8页Journal of Tianjin University of Science & Technology

摘　　要：为了实现振动信号预处理和信号分析,基于MATLAB与Delphi混合编程设计开发了一套集信号处理与多功能时频分析于一体的振动测试系统.应用组件对象模型的技术得到MATLAB平台下的各种信号处理与分析动态链接库文件,并安装于Delphi平台的ActiveX组件中,Delphi语言编程产生界面调用DLL文件实现32种信号处理与分析功能方法;提出并实现多种新的时频组合方法,这些组合方法能更好地提取非平稳信号的频率特征成分;通过仿真信号与实例验证了该系统的可靠性.该系统可脱离MATLAB平台独立运行于Windows操作系统,操作方便,易于扩充.In order to realize vibration signal processing and analysis,a vibration test system of signal processing and multifunctional time-frequency analysis has been developed,based on mixed programming with MATLAB and Delphi.Various dynamic-link library(DLL)files of MATLAB signal processing and analysis were obtained and installed in Delphi ActiveX module,using component object model(COM)based on mixed programming technology.The system interface was designed and programmed in Delphi language,using DLL files to get thirty-two functional methods of signal processing and analysis.Furthermore,some new time-frequency combined analysis methods were proposed and performed to extract clearer features of non-stationary vibration signals.The new system is verified by simulation and a case study.It can run in Windows system separated from MATLAB platform.The system operats easily and can expand in many different ways.

关 键 词：组件对象模型 混合编程 信号处理 时频分析 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置] TP311[自动化与计算机技术—控制科学与工程]